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  • Listed by: Great Island Realty LLC • Sue Salehkhou
    Bought with: Tate & Foss Sotheby's International Rlty
    $1,700,000

    112 New Castle Avenue, Portsmouth, NH 03801

    3beds
    1,659sqft
    Single Family Residence
    Built in 1860
    5,663 Square Feet Lot
    $1,700,300 Zestimate®
    $1,025/sqft
    $4,899 Estimated rent

    Home value

    $1,700,300

    $1.62M - $1.79M

    $4,899/mo

    Zestimate® history
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    What's special

    Premium finishes throughoutThoughtfully designed living spaceSeparate laundry roomGuest bathroomTimeless new england architectureStunning custom kitchenBeautiful cabinetry
    Timeless New England architecture meets sophisticated modern design in this beautifully restored antique Little Harbor residence on highly sought-after New Castle Avenue in Portsmouth. Completely renovated from top to bottom, this exceptional 3-bedroom, 2.5-bath home offers thoughtfully designed living space with premium finishes throughout. The heart of the home is a stunning custom kitchen featuring beautiful cabinetry, quartz countertops and island with plenty of guest seating, and stainless appliances to include the induction range. The main level offers a welcoming front foyer with antique hall tree, an inviting living room complete with gas fireplace, a spacious dining room, and the sun filled family room overlooking the well landscaped backyard as well as a separate laundry room and guest bathroom. Upstairs offers the main bedroom with its own private bathroom with custom tiled shower, 2 additional guest bedrooms and a fully renovated guest bathroom complete with custom tub and shower and double sinks. Every major system has been upgraded, providing peace of mind for years to come, including all-new electrical, plumbing, HVAC, and a new roof. Outside, enjoy the well landscaped backyard with a brick patio area perfect for relaxing or entertaining family and friends. Ideally located just minutes from downtown Portsmouth's vibrant restaurants, boutiques, waterfront, and cultural attractions, this turnkey property offers the rare opportunity to own a fully renovated antique home in one of the Seacoast's most desirable locations. Historic charm, exceptional craftsmanship, and modern luxury come together in this truly special offering. Open House Saturday June 27 from 10am-1pm.

    Zillow last checked:

    Listing updated:

    Listed by:

    Sue Salehkhou,

    Great Island Realty LLC 603-433-3350

    Bought with:

    John W Rice

    Tate & Foss Sotheby's International Rlty

    Source: PrimeMLS,MLS#: 5096632MLS Logo

    Facts & features

    Interior

    Bedrooms & bathrooms
    • Bedrooms: 3
    • Bathrooms: 3
    • Full bathrooms: 1
    • 3/4 bathrooms: 1
    • 1/2 bathrooms: 1
    Heating
    • Electric, Heat Pump, Mini Split
    Cooling
    • Mini Split
    Appliances
    • Included: Dishwasher, Dryer, Microwave, Electric Range, Refrigerator, Washer, Induction Cooktop
    • Laundry: 1st Floor Laundry
    Features
    • Kitchen Island
    • Flooring: Tile, Wood
    • Windows: Skylight(s)
    • Basement: Bulkhead,Unfinished,Basement Stairs,Interior Entry
    • Has fireplace: Yes
    • Fireplace features: Gas
    Interior area
    • Total structure area: 2,329
    • Total interior livable area: 1,659 sqft
    • Finished area above ground: 1,659
    • Finished area below ground: 0

    Property

    Parking
    • Parking features: Paved, Driveway
    • Has uncovered spaces: Yes
    Features
    • Levels: Two
    • Stories: 2
    • Patio & porch: Patio
    • Exterior features: Garden
    • Has view: Yes
    • View description: Water
    • Water view: Water
    Lot
    • Size: 5,663 Square Feet
    • Features: Landscaped, Level, In Town, Near Shopping, Near School(s)
    Details
    • Parcel number: PRSMM0101B0028L
    • Zoning description: SRB

    Construction

    Type & style
    • Home type: SingleFamily
    • Architectural style: Antique,New Englander
    • Property subtype: Single Family Residence
    Materials
    • Wood Exterior
    • Foundation: Brick, Concrete, Stone
    • Roof: Architectural Shingle
    Condition
    • New construction: No
    • Year built: 1860

    Utilities & green energy

    • Electric: 200+ Amp Service, Circuit Breakers
    • Sewer: Public Sewer
    • Utilities for property: Gas On-Site

    Community & HOA

    Location
    • Region: Portsmouth

    Financial & listing details

    • Price per square foot: $1,025/sqft
    • Tax assessed value: $1,302,900
    • Annual tax amount: $14,996
    • Date on market: 6/25/2026
    • Exclusions: Bench in LR, bookcase in sunroom, kitchen stools, all outdoor furniture, 3rd bedroom furniture, all curtains

    Price history

    DateEventPrice
    7/17/2026Sold$1,700,000+6.3%$1,025/sqft
    Source: PrimeMLS #5096632 Report a problem
    7/1/2026Pending sale$1,599,000$964/sqft
    Source: PrimeMLS #5096632 Report a problem
    6/25/2026Listed for sale$1,599,000+45.4%$964/sqft
    Source: PrimeMLS #5096632 Report a problem
    7/30/2025Sold$1,100,000-7.6%$663/sqft
    Source: PrimeMLS #5029700 Report a problem
    7/8/2025Contingent$1,190,000$717/sqft
    Source: PrimeMLS #5029700 Report a problem
    5/19/2025Price change$1,190,000-13.8%$717/sqft
    Source: PrimeMLS #5029700 Report a problem
    4/15/2025Price change$1,380,000-7.4%$832/sqft
    Source: PrimeMLS #5029700 Report a problem
    3/23/2025Price change$1,490,000-12.4%$898/sqft
    Source: PrimeMLS #5029700 Report a problem
    2/18/2025Listed for sale$1,700,000$1,025/sqft
    Source: PrimeMLS #5029700 Report a problem

    Public tax history

    YearProperty taxesTax assessment
    2024$14,566 +23.2%$1,302,900 +77.8%
    2023$11,822 +6.1%$732,900
    2022$11,140 +3.4%$732,900
    2020$10,774 -1.1%$732,900
    2019$10,891 +17.1%$732,900 +24.8%
    2018$9,300 +3%$587,100
    2017$9,030 +11.6%$587,100 +23.7%
    2016$8,091 +1.5%$474,800
    2015$7,972 +10.6%$474,800 +19.2%
    2014$7,207 +4.5%$398,200 +1.3%
    2012$6,897 +1.6%$393,000
    2011$6,787 -0.8%$393,000
    2010$6,842 $393,000
    Find assessor info on the county website

    Neighborhood: 03801

    Nearby schools

    GreatSchools rating
    Schools provided by the listing agent
    • Elementary: Little Harbor School
    • Middle: Portsmouth Middle School
    • High: Portsmouth High School
    • District: Portsmouth

    Source: PrimeMLS. This data may not be complete. We recommend contacting the local school district to confirm school assignments for this home.

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    Estimated market value
    $1,700,300
    Get a cash offer in 3 minutes
    Find out how much your home could sell for in as little as 3 minutes with a no-obligation cash offer.
    Estimated market value
    $1,700,300